/* eslint-disable eol-last */
"use strict";
const path = require("path");
// const defaultSettings = require('./src/settings.js')

function resolve (dir) {
  return path.join(__dirname, dir);
}

const name = "vue Element Admin"; // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following method:
// port = 9527 npm run dev OR npm run dev --port = 9527
const port = process.env.port || process.env.npm_config_port || 8082; // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {

  /**
	 * You will need to set publicPath if you plan to deploy your site under a sub path,
	 * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
	 * then publicPath should be set to "/bar/".
	 * In most cases please use '/' !!!
	 * Detail: https://cli.vuejs.org/config/#publicpath
	 */
  publicPath: "./",
  lintOnSave: false,
  productionSourceMap: false,
  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    },
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        "@": resolve("src")
      }
    }
  },
  chainWebpack (config) {
    config.plugins["delete"]("preload"); // TODO: need test
    config.plugins["delete"]("prefetch"); // TODO: need test
    config.module
      .rule("")
      .test(/mxClient\.js$/)
      .use("exports-loader")
      .loader(
        "exports-loader?mxClient,mxToolbar,mxEdgeStyle,mxConnectionHandler,mxEllipse,mxConnectionConstraint,mxWindow," +
        "mxObjectCodec,mxGraphModel,mxActor,mxPopupMenu,mxShape,mxEventObject,mxGraph,mxPopupMenuHandler,mxPrintPreview," +
        "mxEventSource,mxRectangle,mxVertexHandler,mxMouseEvent,mxGraphView,mxCodecRegistry,mxImage,mxGeometry,mxCellState," +
        "mxRubberband,mxConstraintHandler,mxKeyHandler,mxDragSource,mxGraphModel,mxEvent,mxUtils,mxEvent,mxCodec,mxCell," +
        "mxConstants,mxPoint,mxGraphHandler,mxCylinder,mxCellRenderer,mxEvent,mxUndoManager,mxStencilRegistry,mxStencil,mxSwimlaneManager,mxStackLayout,mxLayoutManager,mxClipboard,mxCellEditor"
      )
      .end();
    config.resolve.alias
      .set("@", resolve("src"))
      .set("@assets", resolve("src/assets"));
    // set svg-sprite-loader
    config.module
      .rule("svg")
      .exclude.add(resolve("src/icons"))
      .end();
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]"
      })
      .end();

    // set preserveWhitespace
    config.module
      .rule("vue")
      .use("vue-loader")
      .loader("vue-loader")
      .tap((options) => {
        options.compilerOptions.preserveWhitespace = true;
        return options;
      })
      .end();

    config
      // https://webpack.js.org/configuration/devtool/#development
      .when(process.env.NODE_ENV === "development", (config) =>
        config.devtool("source-map")
      );

    config.when(process.env.NODE_ENV !== "development", (config) => {
      config
        .plugin("ScriptExtHtmlWebpackPlugin")
        .after("html")
        .use("script-ext-html-webpack-plugin", [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end();
      config.optimization.splitChunks({
        chunks: "all",
        cacheGroups: {
          libs: {
            name: "chunk-libs",
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: "initial" // only package third parties that are initially dependent
          },
          elementUI: {
            name: "chunk-elementUI", // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: "chunk-commons",
            test: resolve("src/components"), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      });
      config.optimization.runtimeChunk("single");
    });
  }
};
